211440430 has 8 divisors (see below), whose sum is σ = 380592792. Its totient is φ = 84576168.

The previous prime is 211440413. The next prime is 211440431. The reversal of 211440430 is 34044112.

211440430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 211440398 and 211440407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211440431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10572012 + ... + 10572031.

It is an arithmetic number, because the mean of its divisors is an integer number (47574099).

Almost surely, 2^211440430 is an apocalyptic number.

211440430 is a deficient number, since it is larger than the sum of its proper divisors (169152362).

211440430 is a wasteful number, since it uses less digits than its factorization.

211440430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21144050.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 211440430 is about 14540.9913692293. The cubic root of 211440430 is about 595.7481162406.

Adding to 211440430 its reverse (34044112), we get a palindrome (245484542).

The spelling of 211440430 in words is "two hundred eleven million, four hundred forty thousand, four hundred thirty".